Home / 1,072,990.20-1,609,485.30-408,055.80

Finding the Fourth Proportional to 1,072,990.20, 1,609,485.30 and 408,055.80

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Solution

The fourth proportional to 1,072,990.20, 1,609,485.30 and 408,055.80 is: 612,083.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,072,990.20 : 1,609,485.30 = 408,055.80 : x
  2. Step 2: Convert to fraction form
    1,072,990.20/1,609,485.30 = 408,055.80/x
  3. Step 3: Cross multiply
    1,072,990.20x = 1,609,485.30 × 408,055.80
  4. Step 4: Simplify right side
    1,072,990.20x = 656,759,811,679.74
  5. Step 5: Solve for x
    x = 656,759,811,679.74/1,072,990.20
  6. Step 6: Final answer
    x = 612,083.70

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.